--- /dev/null
+/* Test file for mpfr_set_si and mpfr_set_ui.
+
+Copyright 1999, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+Contributed by the Arenaire and Cacao projects, INRIA.
+
+This file is part of the GNU MPFR Library.
+
+The GNU MPFR Library is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or (at your
+option) any later version.
+
+The GNU MPFR Library is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
+License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the GNU MPFR Library; see the file COPYING.LIB. If not, write to
+the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+MA 02110-1301, USA. */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+
+#include "mpfr-test.h"
+
+#define ERROR(str) {printf("Error for "str"\n"); exit(1);}
+
+static void
+test_2exp (void)
+{
+ mpfr_t x;
+ int res;
+
+ mpfr_init2 (x, 32);
+
+ mpfr_set_ui_2exp (x, 1, 0, GMP_RNDN);
+ if (mpfr_cmp_ui(x, 1))
+ ERROR("(1U,0)");
+
+ mpfr_set_ui_2exp (x, 1024, -10, GMP_RNDN);
+ if (mpfr_cmp_ui(x, 1))
+ ERROR("(1024U,-10)");
+
+ mpfr_set_ui_2exp (x, 1024, 10, GMP_RNDN);
+ if (mpfr_cmp_ui(x, 1024*1024))
+ ERROR("(1024U,+10)");
+
+ mpfr_set_si_2exp (x, -1024L * 1024L, -10, GMP_RNDN);
+ if (mpfr_cmp_si(x, -1024))
+ ERROR("(1M,-10)");
+
+ mpfr_set_ui_2exp (x, 0x92345678, 16, GMP_RNDN);
+ if (mpfr_cmp_str (x, "92345678@4", 16, GMP_RNDN))
+ ERROR("(x92345678U,+16)");
+
+ mpfr_set_si_2exp (x, -0x1ABCDEF0, -256, GMP_RNDN);
+ if (mpfr_cmp_str (x, "-1ABCDEF0@-64", 16, GMP_RNDN))
+ ERROR("(-x1ABCDEF0,-256)");
+
+ mpfr_set_prec (x, 2);
+ res = mpfr_set_si_2exp (x, 7, 10, GMP_RNDU);
+ if (mpfr_cmp_ui (x, 1<<13) || res <= 0)
+ ERROR ("Prec 2 + si_2exp");
+
+ res = mpfr_set_ui_2exp (x, 7, 10, GMP_RNDU);
+ if (mpfr_cmp_ui (x, 1<<13) || res <= 0)
+ ERROR ("Prec 2 + ui_2exp");
+
+ mpfr_clear_flags ();
+ mpfr_set_ui_2exp (x, 17, MPFR_EMAX_MAX, GMP_RNDN);
+ if (!mpfr_inf_p (x) || MPFR_IS_NEG (x))
+ ERROR ("mpfr_set_ui_2exp and overflow (bad result)");
+ if (!mpfr_overflow_p ())
+ ERROR ("mpfr_set_ui_2exp and overflow (overflow flag not set)");
+
+ mpfr_clear_flags ();
+ mpfr_set_si_2exp (x, 17, MPFR_EMAX_MAX, GMP_RNDN);
+ if (!mpfr_inf_p (x) || MPFR_IS_NEG (x))
+ ERROR ("mpfr_set_si_2exp (pos) and overflow (bad result)");
+ if (!mpfr_overflow_p ())
+ ERROR ("mpfr_set_si_2exp (pos) and overflow (overflow flag not set)");
+
+ mpfr_clear_flags ();
+ mpfr_set_si_2exp (x, -17, MPFR_EMAX_MAX, GMP_RNDN);
+ if (!mpfr_inf_p (x) || MPFR_IS_POS (x))
+ ERROR ("mpfr_set_si_2exp (neg) and overflow (bad result)");
+ if (!mpfr_overflow_p ())
+ ERROR ("mpfr_set_si_2exp (neg) and overflow (overflow flag not set)");
+
+ mpfr_clear (x);
+}
+
+static void
+test_macros (void)
+{
+ mpfr_t x[3];
+ mpfr_ptr p;
+ int r;
+
+ mpfr_inits (x[0], x[1], x[2], (mpfr_ptr) 0);
+ p = x[0];
+ r = 0;
+ mpfr_set_ui (p++, 0, (mp_rnd_t) r++);
+ if (p != x[1] || r != 1)
+ {
+ printf ("Error in mpfr_set_ui macro: p - x[0] = %d (expecting 1), "
+ "r = %d (expecting 1)\n", (int) (p - x[0]), r);
+ exit (1);
+ }
+ p = x[0];
+ r = 0;
+ mpfr_set_si (p++, 0, (mp_rnd_t) r++);
+ if (p != x[1] || r != 1)
+ {
+ printf ("Error in mpfr_set_si macro: p - x[0] = %d (expecting 1), "
+ "r = %d (expecting 1)\n", (int) (p - x[0]), r);
+ exit (1);
+ }
+ mpfr_clears (x[0], x[1], x[2], (mpfr_ptr) 0);
+}
+
+/* FIXME: Comparing against mpfr_get_si/ui is not ideal, it'd be better to
+ have all tests examine the bits in mpfr_t for what should come out. */
+
+int
+main (int argc, char *argv[])
+{
+ mpfr_t x;
+ long k, z, d, N;
+ unsigned long zl, dl;
+ int inex;
+ int r;
+ mp_exp_t emin, emax;
+ int flag;
+
+ tests_start_mpfr ();
+
+ mpfr_init2 (x, 100);
+
+ N = (argc==1) ? 100000 : atol (argv[1]);
+
+ for (k = 1; k <= N; k++)
+ {
+ z = (long) (randlimb () & LONG_MAX) + LONG_MIN / 2;
+ inex = mpfr_set_si (x, z, GMP_RNDZ);
+ d = mpfr_get_si (x, GMP_RNDZ);
+ if (d != z)
+ {
+ printf ("Error in mpfr_set_si: expected %ld got %ld\n", z, d);
+ exit (1);
+ }
+ if (inex)
+ {
+ printf ("Error in mpfr_set_si: inex value incorrect for %ld: %d\n",
+ z, inex);
+ exit (1);
+ }
+ }
+
+ for (k = 1; k <= N; k++)
+ {
+ zl = randlimb ();
+ inex = mpfr_set_ui (x, zl, GMP_RNDZ);
+ dl = mpfr_get_ui (x, GMP_RNDZ);
+ if (dl != zl)
+ {
+ printf ("Error in mpfr_set_ui: expected %lu got %lu\n", zl, dl);
+ exit (1);
+ }
+ if (inex)
+ {
+ printf ("Error in mpfr_set_ui: inex value incorrect for %lu: %d\n",
+ zl, inex);
+ exit (1);
+ }
+ }
+
+ mpfr_set_prec (x, 2);
+ if (mpfr_set_si (x, 5, GMP_RNDZ) >= 0)
+ {
+ printf ("Wrong inexact flag for x=5, rnd=GMP_RNDZ\n");
+ exit (1);
+ }
+
+ mpfr_set_prec (x, 2);
+ if (mpfr_set_si (x, -5, GMP_RNDZ) <= 0)
+ {
+ printf ("Wrong inexact flag for x=-5, rnd=GMP_RNDZ\n");
+ exit (1);
+ }
+
+ mpfr_set_prec (x, 3);
+ inex = mpfr_set_si (x, 77617, GMP_RNDD); /* should be 65536 */
+ if (MPFR_MANT(x)[0] != ((mp_limb_t)1 << (mp_bits_per_limb-1))
+ || inex >= 0)
+ {
+ printf ("Error in mpfr_set_si(x:3, 77617, GMP_RNDD)\n");
+ mpfr_print_binary (x);
+ puts ("");
+ exit (1);
+ }
+ inex = mpfr_set_ui (x, 77617, GMP_RNDD); /* should be 65536 */
+ if (MPFR_MANT(x)[0] != ((mp_limb_t)1 << (mp_bits_per_limb-1))
+ || inex >= 0)
+ {
+ printf ("Error in mpfr_set_ui(x:3, 77617, GMP_RNDD)\n");
+ mpfr_print_binary (x);
+ puts ("");
+ exit (1);
+ }
+
+ mpfr_set_prec (x, 2);
+ inex = mpfr_set_si (x, 33096, GMP_RNDU);
+ if (mpfr_get_si (x, GMP_RNDZ) != 49152 || inex <= 0)
+ {
+ printf ("Error in mpfr_set_si, exp. 49152, got %ld, inex %d\n",
+ mpfr_get_si (x, GMP_RNDZ), inex);
+ exit (1);
+ }
+ inex = mpfr_set_ui (x, 33096, GMP_RNDU);
+ if (mpfr_get_si (x, GMP_RNDZ) != 49152)
+ {
+ printf ("Error in mpfr_set_ui, exp. 49152, got %ld, inex %d\n",
+ mpfr_get_si (x, GMP_RNDZ), inex);
+ exit (1);
+ }
+
+ for (r = 0 ; r < GMP_RND_MAX ; r++)
+ {
+ mpfr_set_si (x, -1, (mp_rnd_t) r);
+ mpfr_set_ui (x, 0, (mp_rnd_t) r);
+ if (MPFR_IS_NEG (x) || mpfr_get_ui (x, (mp_rnd_t) r) != 0)
+ {
+ printf ("mpfr_set_ui (x, 0) gives -0 for %s\n",
+ mpfr_print_rnd_mode ((mp_rnd_t) r));
+ exit (1);
+ }
+
+ mpfr_set_si (x, -1, (mp_rnd_t) r);
+ mpfr_set_si (x, 0, (mp_rnd_t) r);
+ if (MPFR_IS_NEG (x) || mpfr_get_si (x, (mp_rnd_t) r) != 0)
+ {
+ printf ("mpfr_set_si (x, 0) gives -0 for %s\n",
+ mpfr_print_rnd_mode ((mp_rnd_t) r));
+ exit (1);
+ }
+ }
+
+ /* check potential bug in case mp_limb_t is unsigned */
+ emax = mpfr_get_emax ();
+ set_emax (0);
+ mpfr_set_si (x, -1, GMP_RNDN);
+ if (mpfr_sgn (x) >= 0)
+ {
+ printf ("mpfr_set_si (x, -1) fails\n");
+ exit (1);
+ }
+ set_emax (emax);
+
+ emax = mpfr_get_emax ();
+ set_emax (5);
+ mpfr_set_prec (x, 2);
+ mpfr_set_si (x, -31, GMP_RNDN);
+ if (mpfr_sgn (x) >= 0)
+ {
+ printf ("mpfr_set_si (x, -31) fails\n");
+ exit (1);
+ }
+ set_emax (emax);
+
+ /* test for get_ui */
+ mpfr_set_ui (x, 0, GMP_RNDN);
+ MPFR_ASSERTN(mpfr_get_ui (x, GMP_RNDN) == 0);
+ mpfr_set_ui (x, ULONG_MAX, GMP_RNDU);
+ mpfr_nextabove (x);
+ mpfr_get_ui (x, GMP_RNDU);
+
+ /* another test for get_ui */
+ mpfr_set_prec (x, 10);
+ mpfr_set_str_binary (x, "10.101");
+ dl = mpfr_get_ui (x, GMP_RNDN);
+ MPFR_ASSERTN (dl == 3);
+
+ mpfr_set_str_binary (x, "-1.0");
+ mpfr_get_ui (x, GMP_RNDN);
+
+ mpfr_set_str_binary (x, "0.1");
+ dl = mpfr_get_ui (x, GMP_RNDN);
+ MPFR_ASSERTN (dl == 0);
+ dl = mpfr_get_ui (x, GMP_RNDZ);
+ MPFR_ASSERTN (dl == 0);
+ dl = mpfr_get_ui (x, GMP_RNDD);
+ MPFR_ASSERTN (dl == 0);
+ dl = mpfr_get_ui (x, GMP_RNDU);
+ MPFR_ASSERTN (dl == 1);
+
+ /* coverage tests */
+ mpfr_set_prec (x, 2);
+ mpfr_set_si (x, -7, GMP_RNDD);
+ MPFR_ASSERTN(mpfr_cmp_si (x, -8) == 0);
+ mpfr_set_prec (x, 2);
+ mpfr_set_ui (x, 7, GMP_RNDU);
+ MPFR_ASSERTN(mpfr_cmp_ui (x, 8) == 0);
+ emax = mpfr_get_emax ();
+ set_emax (3);
+ mpfr_set_ui (x, 7, GMP_RNDU);
+ MPFR_ASSERTN(mpfr_inf_p (x) && mpfr_sgn (x) > 0);
+ set_emax (1);
+ MPFR_ASSERTN( mpfr_set_ui (x, 7, GMP_RNDU) );
+ MPFR_ASSERTN(mpfr_inf_p (x) && mpfr_sgn (x) > 0);
+ set_emax (emax);
+ mpfr_set_ui_2exp (x, 17, -50, GMP_RNDN);
+ MPFR_ASSERTN (mpfr_get_ui (x, GMP_RNDD) == 0);
+ MPFR_ASSERTN (mpfr_get_si (x, GMP_RNDD) == 0);
+
+ /* Test for ERANGE flag + correct behaviour if overflow */
+ mpfr_set_prec (x, 256);
+ mpfr_set_ui (x, ULONG_MAX, GMP_RNDN);
+ mpfr_clear_erangeflag ();
+ dl = mpfr_get_ui (x, GMP_RNDN);
+ if (dl != ULONG_MAX || mpfr_erangeflag_p ())
+ {
+ printf ("ERROR for get_ui + ERANGE + ULONG_MAX (1)\n");
+ exit (1);
+ }
+ mpfr_add_ui (x, x, 1, GMP_RNDN);
+ dl = mpfr_get_ui (x, GMP_RNDN);
+ if (dl != ULONG_MAX || !mpfr_erangeflag_p ())
+ {
+ printf ("ERROR for get_ui + ERANGE + ULONG_MAX (2)\n");
+ exit (1);
+ }
+ mpfr_set_si (x, -1, GMP_RNDN);
+ mpfr_clear_erangeflag ();
+ dl = mpfr_get_ui (x, GMP_RNDN);
+ if (dl != 0 || !mpfr_erangeflag_p ())
+ {
+ printf ("ERROR for get_ui + ERANGE + -1 \n");
+ exit (1);
+ }
+ mpfr_set_si (x, LONG_MAX, GMP_RNDN);
+ mpfr_clear_erangeflag ();
+ d = mpfr_get_si (x, GMP_RNDN);
+ if (d != LONG_MAX || mpfr_erangeflag_p ())
+ {
+ printf ("ERROR for get_si + ERANGE + LONG_MAX (1): %ld\n", d);
+ exit (1);
+ }
+ mpfr_add_ui (x, x, 1, GMP_RNDN);
+ d = mpfr_get_si (x, GMP_RNDN);
+ if (d != LONG_MAX || !mpfr_erangeflag_p ())
+ {
+ printf ("ERROR for get_si + ERANGE + LONG_MAX (2)\n");
+ exit (1);
+ }
+ mpfr_set_si (x, LONG_MIN, GMP_RNDN);
+ mpfr_clear_erangeflag ();
+ d = mpfr_get_si (x, GMP_RNDN);
+ if (d != LONG_MIN || mpfr_erangeflag_p ())
+ {
+ printf ("ERROR for get_si + ERANGE + LONG_MIN (1)\n");
+ exit (1);
+ }
+ mpfr_sub_ui (x, x, 1, GMP_RNDN);
+ d = mpfr_get_si (x, GMP_RNDN);
+ if (d != LONG_MIN || !mpfr_erangeflag_p ())
+ {
+ printf ("ERROR for get_si + ERANGE + LONG_MIN (2)\n");
+ exit (1);
+ }
+
+ emin = mpfr_get_emin ();
+ mpfr_set_prec (x, 2);
+
+ mpfr_set_emin (4);
+ mpfr_clear_flags ();
+ mpfr_set_ui (x, 7, GMP_RNDU);
+ flag = mpfr_underflow_p ();
+ mpfr_set_emin (emin);
+ if (mpfr_cmp_ui (x, 8) != 0)
+ {
+ printf ("Error for mpfr_set_ui (x, 7, GMP_RNDU), prec = 2, emin = 4\n");
+ exit (1);
+ }
+ if (flag)
+ {
+ printf ("mpfr_set_ui (x, 7, GMP_RNDU) should not underflow "
+ "with prec = 2, emin = 4\n");
+ exit (1);
+ }
+
+ mpfr_set_emin (4);
+ mpfr_clear_flags ();
+ mpfr_set_si (x, -7, GMP_RNDD);
+ flag = mpfr_underflow_p ();
+ mpfr_set_emin (emin);
+ if (mpfr_cmp_si (x, -8) != 0)
+ {
+ printf ("Error for mpfr_set_si (x, -7, GMP_RNDD), prec = 2, emin = 4\n");
+ exit (1);
+ }
+ if (flag)
+ {
+ printf ("mpfr_set_si (x, -7, GMP_RNDD) should not underflow "
+ "with prec = 2, emin = 4\n");
+ exit (1);
+ }
+
+ mpfr_clear (x);
+
+ test_2exp ();
+ test_macros ();
+ tests_end_mpfr ();
+ return 0;
+}
projects / msp430-gcc.git / blobdiff